The New Sudoku Players' Forum

by **ArkieTech** » Wed Oct 15, 2014 11:01 pm

Code: Select all: *-----------* |7..|.9.|..1| |..2|...|7..| |.9.|8..|34.| |---+---+---| |...|7.9|8..| |1..|.8.|..5| |..8|5.4|...| |---+---+---| |.17|..8|62.| |..3|...|4..| |2..|.6.|..8| *-----------*

by **SteveG48** » Thu Oct 16, 2014 2:45 am

Code: Select all: *---------------------------------------------------------------------* | 7 34568 aA456a | 2346 9 2356 |b25 568 1 | | 34568 34568 2 | 1346 345 1356 | 7 5689 69 | |d5-6b 9 1 | 8 257 2567 | 3 4 c26 | *-----------------------+----------------------+----------------------| | 356 2356 56 | 7 123 9 | 8 136 4 | | 1 D2347 B49 | 236 8 236 | 29 379 5 | | 369 2367 8 | 5 123 4 | 129 13679 23679 | *-----------------------+----------------------+----------------------| | 459 1 7 | 349 345 8 | 6 2 39 | | 68 68 3 | 129 257 1257 | 4 1579 79 | | 2 C45 B459 | 1349 6 1357 | 159 13579 8 | *---------------------------------------------------------------------* Kraken cell [456]r1c3 => -6 r3c1 ; stte (4)r1c3 - (4=5)r59c3 - (5=4)r9c2 - (4)r5c2 => contradiction -4r5 || (5)r1c3 - (5=2)r1c7 - (2=6)r3c9 - (6)r3c1 || (6)r1c3 - (6)r3c1

Or as a 2-stepper:

(4=5)r59c3 - (5=4)r9c2 - r5c2 = r5c3 => -4 r1c3;
XY-wing (5=2)r1c7 - (2=6)r3c9 - (6=5) r3c1 => -5 r1c3 ; stte

by **Leren** » Thu Oct 16, 2014 3:05 am

Code: Select all: *--------------------------------------------------------------------------------* | 7 34568 Ba456 | 2346 9 2356 |b25 568 1 | | 34568 34568 2 | 1346 345 1356 | 7 5689 69 | |d56 9 1 | 8 257 2567 | 3 4 c26 | |--------------------------+--------------------------+--------------------------| | 356 2356 A56 | 7 123 9 | 8 136 4 | | 1 2347 49 | 236 8 236 | 29 379 5 | | 369 2367 8 | 5 123 4 | 129 13679 23679 | |--------------------------+--------------------------+--------------------------| |e459b 1 7 | 349 f35-4c 8 | 6 2 39 | | 68 68 3 | 129 257 1257 | 4 1579 79 | | 2 45 459a | 1349 6 1357 | 159 13579 8 | *--------------------------------------------------------------------------------* Kraken Column 3 Digit 5 : 5 r1c3 - (5=2) r1c7 - (2=6) r3c9 - (6=5) r3c1 - r7c1 = r7c5 - 4 r7c5; | 5 r4c3 - 6 r4c3 = r1c3 ----------| 5 r9c3 - r7c1 = r7c5 - 4 r7c5; => - 4 r7c5; stte

Leren

by **JC Van Hay** » Thu Oct 16, 2014 7:47 am

Code: Select all: +-------------------------+-----------------+--------------------+ | 7 3468-5 (46-5) | 2346 9 2356 | (25) 568 1 | | 3568(4) 34568 2 | 1346 345 1356 | 7 5689 69 | | (56) 9 1 | 8 257 2567 | 3 4 (26) | +-------------------------+-----------------+--------------------+ | 356 2356 56 | 7 123 9 | 8 136 4 | | 1 2347 49 | 236 8 236 | 29 379 5 | | 369 2367 8 | 5 123 4 | 129 13679 23679 | +-------------------------+-----------------+--------------------+ | 9-5(4) 1 7 | 349 345 8 | 6 2 39 | | 68 68 3 | 129 257 1257 | 4 1579 79 | | 2 45 459 | 1349 6 1357 | 159 13579 8 | +-------------------------+-----------------+--------------------+

XYWing(2-56)r3c19.r1c7 - 5r1c23; HWing(4-56)r3c1.r1c3.r27c1 - 5r7c1; stte

by **eleven** » Thu Oct 16, 2014 9:44 am

Though it does not help much, this is a nice Single Target example:

Code: Select all: +----------------------+----------------------+----------------------+ | 7 34568 456 | 2346 9 2356 | 25 568 1 | |*34568 34568 2 | 1346 *345 1356 | 7 5689 69 | | 56 9 1 | 8 257 2567 | 3 4 26 | +----------------------+----------------------+----------------------+ | 356 2356 56 | 7 123 9 | 8 136 4 | | 1 2347 49 | 236 8 236 | 29 379 5 | | 369 2367 8 | 5 123 4 | 129 13679 23679 | +----------------------+----------------------+----------------------+ |*459 1 7 | 349 T345 8 | 6 2 39 | | 68 68 3 | 129 257 1257 | 4 1579 79 | | 2 #45 #459 | 1349 6 1357 | 159 13579 8 | +----------------------+----------------------+----------------------+

Base 459 in r9c23, single Target r7c5 for 45 => r9c3=9, r7c5<>3
4r9c23-r7c1=r2c1-r2c5=r7c5
5r9c23-r7c1=r7c5

October 16, 2014